diff --git a/python/paddle/fluid/eager/eager_tensor_patch_methods.py b/python/paddle/fluid/eager/eager_tensor_patch_methods.py
index b61bf78116aeb3960d32dded684d015ed0991962..547a948da402b0a3e8209ee8d0a2dd8b426c0476 100644
--- a/python/paddle/fluid/eager/eager_tensor_patch_methods.py
+++ b/python/paddle/fluid/eager/eager_tensor_patch_methods.py
@@ -20,4 +20,5 @@ def monkey_patch_eagertensor():
         from paddle.tensor.to_string import eager_tensor_to_string
         return eager_tensor_to_string(self)
 
-    setattr(core.eager.EagerTensor, "__str__", __str__)
+    if hasattr(core, "eager"):
+        setattr(core.eager.EagerTensor, "__str__", __str__)